3.6 - Cellular Respiration

Question 1

Glycolysis

Answer 1

• Occurs in cytosol
• Anaerobic
• glucose converted into 2 pyruvate
• 2 ATP & NADH

Question 2

What is NADH?

Answer 2

A coenzyme that transfers electrons

Question 3

Link cycle

Answer 3

2 pyruvates are transported into the mitochondrial matrix through active transport
- Oxidizes, becomes 2 acetyl coA
- CO2 released, 2NADH produced

Question 4

Krebs Cycle

Answer 4

• O2 required, CO2 released
  Input: 2acetyl coA
  Output: 2 ATP, 6NADH, 2FADH

Question 5

Electron Transport Chain/Chemiosmosis

Answer 5

• Inner mitrochondrial membrane
• O2 required

Question 6

ETC process

Answer 6

• H+ transferred by NADH & FADH
• Taken to protein complex
• Protein gradient is created, H+ pumped across intermembrane
• Travels through ATP synthase
  *30-38 ATP is created

Question 7

Oxygens role in ETC

Answer 7

Final acceptor of electrons, creates 6H2O.

Question 8

Oxidative phosphorylation

Answer 8

NADH is reduced to NAD+ and H+ is released.
FADH2 is reduced to FAD+ & 2H+

Question 9

What kind of ATP does glycolysis and Krebs make?

Answer 9

Substrate level ATP

Question 10

Which phases occur in the inner mitochondria?

Answer 10

Krebs, link, oxidative phosphorylation
Krebs - inner matrix
OP - inner membrane

Question 11

Which phases produce CO2?

Answer 11

Link and Krebs

Question 12

What reactants produce ATP?

Answer 12

ADP and inorganic phosphate (Pi)

Question 13

Where does fermentation occur?

Answer 13

In glycolysis in the absence of oxygen